含油污泥乳化液的制备及其煤炭浮选性能研究-化学工程专业论文.docxVIP

Subject ：Preparation of Oily Sludge Emulsions and Their Coal Flotation Performance Specialty ：Chemical Engineering Name ：Hou Jie （Signature） Instructor：He Yongjun （Signature） ABSTRACT Oily sludge is a hazardous waste in the exploitation, transportation, processing and refining process of crude oil. Traditional oily sludge treatment technology is difficult and suffers from high cost. This paper focuses on the preparation and application of coal flotation agent from oily sludge, which effectively eliminate pollution and realize the resource utilization of oily sludge, and reduce the flotation costs. This paper systematically tested the basic properties of oily sludge from Yanchang Petroleum Group Xiasiwan oil production factory, such as industrial analysis, element analysis, viscosity, freezing point and density etc. The results showed that the oil content of oil sludge was 43.01%, the viscosity was 1081 mPa · s, the density was 0.99 g/m3, the solidifying point was 28.5 ℃, and the oily sludge’s liquidity was poor. Oily sludge was adopted as main raw material to prepare oily sludge emulsion, and the type, stability and dispersion of the emulsion were characterized. In order to investigate the coal flotation performance of the oily sludge emulsions, the experiment used 3 kinds of different coalification range. The results showed that the oily sludge emulsions were of oil-in-water type. The average size of the oily sludge emulsions was about 4.8 μm. The oily sludge emulsions kept stable for 90 d at room temperature. The optimum conditions for the Hancheng coal flotation was as follows: the collector concentration was 9.0 kg/t, the foaming agent concentration was 0.3 kg/t and the coal pulp concentration was 100 g/L; The optimum conditions for the Taixi coal flotation was as follows: the collector concentration was 3.0 kg/t, the foaming agent concentration was 0.2 kg/t and the coal pulp concentration was 100 g/L; The optimum conditions for the Fuxian coal flotati